When Naruto gains the abilities of Kratos in fanfiction, his story would transform in multiple ways. Firstly, in terms of combat, he would be able to handle battles in a completely new way. His fights would be more brutal and efficient. In the plot, he could take on larger - scale threats much earlier. For instance, if Akatsuki were to target him earlier, he could fend them off more easily. His character development would also shift. He might become more self - reliant as Kratos' abilities are very individual - centric. However, he would still have his Naruto - like spirit, so he would try to use these powers for the sake of his friends and the village. This would create a new dynamic in his relationships with characters like Sasuke, as he would be in a much stronger position both power - wise and in terms of his self - confidence.
His combat abilities would change a lot. Naruto's ninjutsu like the substitution jutsu could be used in new and interesting ways in Issei's world. His ability to sense chakra might be transformed into something that can detect the different types of energy in Issei's universe, such as the demonic energy or the holy energy.
His story would change drastically. He'd become a more formidable opponent. His reputation would grow even more. Maybe he'd be seen as a threat by some villages.
Naruto's chakra could be affected in different ways. Maybe his chakra would take on some properties of the Xenomorphs' acidic blood. So, when he uses certain jutsu, it could have an acidic effect as well. Also, his ability to sense danger could be enhanced. The Xenomorphs have a natural sense of stealth, and Naruto could inherit this, making it even harder for enemies to surprise him. He could also use his shadow clones in more creative ways, like using them as decoys to draw out the Xenomorphs' attacks and then counterattack.
His strength could increase exponentially. He might be able to lift boulders with ease or break through the toughest defenses. His speed could be so great that he becomes a blur to his enemies. Also, his reflexes would be lightning - fast, allowing him to dodge attacks more effectively.
The doujutsu from kami might also grant Naruto new offensive capabilities. It could potentially allow him to use some sort of energy projection or manipulation that is unique to this doujutsu. For example, he could fire beams of spiritual energy that can disrupt an opponent's chakra system.
If Naruto gets rid of Kurama in fanfiction, one way it could change the story is that Naruto would lose a major source of his power. He'd have to rely more on his own natural skills and training. This might make him seem more vulnerable at first, but it could also lead to him developing new and unique abilities. For example, he could focus more on his Sage Mode training and become even more proficient in it without Kurama's chakra interfering or overshadowing his progress.
His life would become more domestic. He would have to worry about things like feeding the cat and cleaning its litter box. Also, he would have a constant companion at home, which would make his place feel more like a home rather than just a place to sleep.
It could also transform his ability to interact with the tailed beasts. Naruto would have a deeper understanding of the nature of tailed beasts and their powers. This might lead to him being able to communicate more effectively with other tailed beasts, or even borrow their powers in a more efficient way. He could potentially use this knowledge to find new ways to calm down enraged tailed beasts and prevent them from causing destruction.
If Naruto was raised by Slenderman in fanfiction, his abilities would change drastically. His chakra control might be influenced by Slenderman's otherworldly energy. He could gain the ability to manipulate the environment in a more spooky way, like making the air feel cold and heavy around his opponents. Also, his Rasengan might take on a different form, perhaps with a dark, swirling energy around it.
His physical abilities would likely improve greatly. Whis could train Naruto to have better speed, strength, and agility, much like how he trains Goku and Vegeta in Dragon Ball. Naruto might also gain the ability to sense ki, which would give him an extra sense in battle.